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Most Cited Patent Families 1999-Chemistry and Related

Following is a CAS database record representing a highly cited patent family.

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CAS indexed 2 chemical substances from this document. CAS subject entries for this document include: Catalysts and Catalysis.

CAPLUS COPYRIGHT 2001 ACS

TITLE:	Porous crystalline synthetic material consisting of silicon and titanium oxides
INVENTOR(S):	Perego, Giovanni; Taramasso, Marco; Notari, Bruno
PATENT ASSIGNEE(S):	SNAM Progetti S.p.A. , Italy
SOURCE:	Belg., 18 pp. CODEN: BEXXAL
LANGUAGE:	French

PATENT INFORMATION:

PATENT NO.       KIND  DATE           APPLICATION NO.  DATE
---------------  ----  --------       ---------------  --------
BE 886812         A1   19810622       BE 1980-203283   19801222
DK 8004939        A    19810622       DK 1980-4939     19801119
DK 157361         B    19891227DK 157361         C    19900521
AU 8064513        A1   19810702       AU 1980-64513    19801119
AU 537263         B2   19840614
GB 2071071        A    19810916       GB 1980-37252    19801120
GB 2071071        B2   19830602
ZA 8007233        A    19820127       ZA 1980-7233     19801120
CA 1155830        A1   19831025       CA 1980-365222   19801121
AT 8005868        A    19870715       AT 1980-5868     19801201
AT 385022         B    19880210
IL 61654          A1   19840330       IL 1980-61654    19801207
CH 645599         A    19841015       CH 1980-9079     19801209
CS 257253         B2   19880415       CS 1980-8785     19801212
BR 8008379        A    19810707       BR 1980-8379     19801217
RO 81245          P    19830601       RO 1980-102875   19801217
SE 8008961        A    19810622       SE 1980-8961     19801218
SE 447818         B    19861215SE 447818         C    19870326
NO 8003859        A    19810622       NO 1980-3859     19801218
NO 158934         B    19880808NO 158934         C    19881116
FR 2471950        A1   19810626       FR 1980-26959    19801218
FR 2471950        B1   19850621
DE 3047798        A1   19811022       DE 1980-3047798  19801218
DE 3047798        C2   19861009
DD 155420         C    19820609       DD 1980-226268   19801218
NL 8006939        A    19810716       NL 1980-6939     19801219
NL 191383         B    19950201NL 191383         C    19950703
JP 56096720       A2   19810805       JP 1980-179066   19801219
JP 01042889       B4   19890918
ES 498480         A1   19811116       ES 1980-498480   19801219
HU 26296          O    19830928       HU 1980-3066     19801219
HU 183272         B    19840428
PL 134017         B3   19850731       PL 1980-228600   19801219
RU 2076775        C1   19970410       RU 1980-3221912  19801219
IN 154032         A    19840908       IN 1980-CA1412   19801220
US 4410501        A    19831018       US 1982-393379   19820629

ABSTRACT:
A porous cryst. synthetic material is prepd. from a base of Si and Ti oxides with a Silicalite structure in which Ti is substituted for Si and is represented by the formula: xTiO2.(1 - x)SiO2, where x is 0.01-0.025. The reactants are: source of Si and Ti oxides, alkali metal oxide, nitrogenous org. base, and H2O in the following molar ratios: SiO2/TiO2 35-65, OH-/SiO2 0.03-0.6, H2O/SiO2 60-100, M/SiO2 0, RN+/SiO2 0.4-1.0, where M is Na or K and RN+ a cation of nitrogenous org. base. The mixt. is subjected to hydrothermal treatment in an autoclave at 130-200.degree., under its autogenous pressure for 6-30 days. The crystals. are sepd. from the mother soln., washed with H2O, dried, and heated 1-72 h in air at 550.degree.. The SiO2 source may be a tetraalkyl orthosilicate, colloidal SiO2, Na or K silicate. The TiO2 source may be TiCl4, TiOCl2, or Ti(OEt)4. The nitrogenous org. base is tetraalkylammonium hydroxide. The material is examd. by x-rays and IR. The morphol. is examd. and studied. This material finds use as a catalyst; its properties can be modified by introduction of other elements of substitution (B, Al, Fe, etc).

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